Sleep changes in various types of reactions to emotional stress

Polygraphic study of night sleep, carried out on 21 students the night after an examination and one night after vacations, revealed two types of reactions to an emotional stress. It has been shown that in the case of a rapid normalization of vegetative and electromyographic manifestations following the end of an emotional stress impact, the structure of night sleep remains unchanged. When manifestations of the emotional stress persist after the elimination of the stress situation, the amount of the rapid sleep in the following night increases. It is suggested that the differences noted are related to different types of anxiety stress.